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According to TVLine, The X-Files veteran Nicholas Lea has been cast as the iconic federal agent in the 12th episode of season 7, airing January 13. Obviously the presence of a historical figure means the Winchester brothers will be time traveling once again. They'll also learn that Ness didn't just hunt bootleggers, he hunted monsters too.

Lea follows another X-Files star on Supernatural after Mitch Pileggi appeared last season as Sam and Dean's grandfather.

There has been a long list of actors to portray Ness. Kevin Costner did it in the film The Untouchables, while Robert Stack and Everwood's Tom Amandes played him on TV.